Revolver



July 10, 1934- o. w. FREDERICH ET AL 1,965,637v

REVOLVER Filed Jan. 3, 1933 I 1 l ATTORNEY Patented July it), i934 EN? @FFSE REVOLVER @tto W. Frederich and Donald M. Frederich, Golden, Colo.

Application January 3, 1933, Serial No. 649,932

4 Claims.

In the usual gun of the revolver type, there must of necessity be a slight space left between the cylinder and the barrel in order to allow the cylinder to freely rotate. At the time of firing, the combustion gases escape through this space so as to decrease the barrel pressure and the bullet velocity.

The principal object of this invention is to provide means for sealing this space between the cylinderand barrel at the time of firing so as to prevent the escape of gases at this point and increase the barrel pressure and bullet velocity.

Another object of the invention is to provide means in the cylinder of a revolver which will act to automatically position the firing chamber in perfect alignment with the barrel at the time of ring. This feature is especially important as a revolver becomes Worn from use. In a badly worn revolver, the ring chamber will not perfectly align with the barrel. This causes the bullet to strike the barrel edge, resulting in deformation of the bullet and irregular flight thereof, as well as retarding the flight velocity.

Other objects and advantages reside in the detail construction of the invention, which is designed for simplicity, economy, and efficiency. These will become more apparent from the following description.

In the following detailed description of the invention reference is had to the accompanying drawing which forms a part hereof. Like numerals refer to like parts in all views of the drawing and throughout the description.

In the drawing;

Fig. l is a side elevation of a typical revolver partially broken away to show the cylinder construction and the invention applied thereto. In this View the operating parts of the cylinder are shown in the cocked or normal position.

Fig. 2 is a similar broken away View of the cylinder illustrating the parts in the firing position.

Fig. 3 is a cross section taken on the line 2-2, Fig. 1, illustrating the cap end of the cylinder.

Fig. 4 illustrates a section through the cylinder taken on the line 4 4, Fig. 3.

Fig. 5 is a detail section illustrating an alternate form of sealing sleeve in the normal posil tion.

Fig. 6 is a similar View illustrating the sleeve of Fig. 5 in the firing position.

In the drawing typical parts of a revolver are indicated by reference number as follows: frame 10, barrel 11, hammer 12, hammer firing point 26, cylinder 13, chamber 14 and trigger 15. Typical downwardly to cause the prong 25 to strike the shells are illustrated at 8 with their bullets at 9. It will be noted that there is a slight space between the barrel 11 and the cylinder 13, as indicated at A. This invention is designed to seal the space A at the time of firing. 60

The invention contemplates positioning a cylindrical sealing sleeve 16 in a counterbore 17 in each of the chambers 14 in the cylinder 13. The forward extremities of the sealing sleeves 16 are designed to be received-in a bevelled countersink 18 formed in the inner extremity of the barrel 11. The latter forward extremities are beveled as indicated at 19 to fit into the countersink.

It can be readily seen that if means are provided to force the sleeves 16 forwardly into the countersink 18, a seal will be provided for the space A. This may be accomplished by means of a push rod 2B which is threaded into an ear 2l on each of the sleeves 16. The push rods terminate in contact buttons 22 at the cap Yface of the cylinder 123. The openings for the push rods 2G are counter-bored to receive compression springs 23 which act under the buttons 22 to maintain the sealing sleeves 16 in the normal, withdrawn position of Figs. 1 and 4. The chamber cavities are slotted, as indicated at 24, to 8 allow longitudinal movement of the ears 21.

In a revolver of the type illustratedythe hammer 12 is provided with a relatively long prong 25 which, when the hammer is down, contacts with one of the buttons 22 to force its pushrod 20 forwardly and project the uppermost sealing sleeve 16 into the barrel. This prong 25 is in addition to the firing point 26 of the hammer, and is relatively longer than the latter so that the sleeve will be projected into the countersink 18 before the firing point fires the shell.

In revolvers of the type having independent firing pins instead of firing points on the hammer, the same function can be accomplished by forming the prong 25 in combination with the usual firing pin.

It can be readily seen from the above that if the trigger 15 is pulled when the mechanism is in the position of Fig. 1, the hammer will swing 100 uppermost button 22. Since this button is connected with the ring sleeve 16 for the chamber 14 which is in alignment with the barrel 11, the sleeve will be projected into the countersink 18. The relative lengths f the prong 25 and the 105 firing point 26 are such that the firing point 26 will strike the cap of the shell just as the sealing sleeve 16 reaches its extreme position. Thus at the time the bullet leaves the shell, a perfect no d the'nvention, what is DONALD M. FREDERICH.

Having thus describe claimed and desired secu ent s:-

red by Letters Pat- 

